[new] geo/py-fiona and deps

[new] geo/py-fiona and deps

Hi,

a new port for http://toblerity.org/fiona/ which is a commandline and a
python library around gdal/ogr (not using the gdal python bindings) to
query/manipulate/build pipelines around geodata.
The tarball also includes py-munch, py-cligj and py-click-plugins as
dependencies. All of them have a python3 flavor.
Feedback welcome.